Cross multiply ( x + 5 ) × 16 = 30 × 2016x + 80 = 60016x = 600 - 8016x = 520
x = 32.5 
Cross multiply ( x + 7 ) × 4 = 3 × ( 2x + 4 )4x + 28 = 6x + 1228 - 12 = 6x - 4x16 = 2x
x = 8
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